The term used for when a bong is in use with 2 or more people when one person's turn to suck it up they drop their trousers and insert the chimney of the bong into their anal passage and suck the smoke up they then eject the bong and the second person puts their lips around person 1's rim in which person 1 farts the contents of the bong and also of their bum into person 2's mouth, as they inhale they precede to get high from the weed, fart and other contents from person 1's bum

Person 1 - Dude i cauldroned off my girlfriend last night she added her own remedy of her shit